THR premieres a first look at the latest episode of the freshman sci-fi drama.

After last week's abrupt death, Clarke (Eliza Taylor) and the remaining members of the hundred are forced to deal with the aftermath. But for Clarke, that's only the start of her worries, after she also discovered that it was her mother, Abby (Paige Turco), whose betrayal was the catalyst for her father's death.

Abby, meanwhile, is dealing with an immediate problem on the Ark: A missing part is delaying any use and even Raven (Lindsey Morgan), a savvy mechanic, must persuade her that the dangers of operating a machine that isn't 100 percent results in guaranteed death ("ruptured lungs," "air bubbles in the brain").The Hollywood Reporterexclusively debuts a scene from Wednesday's episode, "Murphy's Law," wherein Abby also vocalizes her worry over Clarke's whereabouts after noticing that her wristband's signal went out.